Embarrassingly, I am looking for an answer to this question too. It has been awhile since I fired up Stencyl and I'm totally at a loss on how to open the last game project I was working on. I was building it on a different computer and I placed all files in a dropbox. I knew how to do this once, but now I'm at a complete loss.
Is it File->Import? If so, what file do I attempt to open? Do I need to change the games folder? I tried this already, but my game still doesn't show up in the My Games area of the interface even after restarting Stencyl.
Confusing why there isn't just a File->Open option?